SB20240620123 - Information disclosure in Linux kernel ipv4 implementation
Published: June 20, 2024
Security Bulletin ID
SB20240620123
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2017-6347)
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to a boundary error within the ip_cmsg_recv_checksum() function in net/ipv4/ip_sockglue.c when using the MSG_MORE flag in conjunction with loopback UDP transmission. A local user can trigger an out-of-bounds read error and gain access to sensitive information.
Remediation
Install update from vendor's website.
References
- https://github.com/torvalds/linux/commit/ca4ef4574f1ee5252e2cd365f8f5d5bafd048f32
- https://bugzilla.redhat.com/show_bug.cgi?id=1427984
- http://www.openwall.com/lists/oss-security/2017/02/28/5
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.10.1
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ca4ef4574f1ee5252e2cd365f8f5d5bafd048f32
- http://www.securityfocus.com/bid/96487